Simulator for producing various living environments mainly for visual perception

Abstract: The present invention provides a simulator which is easy to manipulate, and with which a user can experience a realistic simulation in various 3-D spaces, or a designer can understand physical environment conditions with the spaces intuitively or analyze mutual affects when there are a plurality of people in the spaces. The simulator comprises an input manipulation unit that the user can manipulate with one hand, a soft-robot display unit for displaying a soft-robot in accordance with the physical environment conditions, and a soft-robots display unit for producing a plurality of soft-robots.

Description: BACKGROUND OF THE INVENTION (1) Field of the Invention The present invention relates to a simulator, more particularly, to a simulator with which one predicts and confirms various living environments mainly by visual perception and further by auditory perception when planning a house. (2) Description of the Related Art Today, requests for houses vary from individual to individual depending on a house one wants. Housing equipment such as an air conditioner has rapidly advanced and the performance has been upgraded. In particular, a so-called housing-air-conditioner (an air conditioner furnished with a house as one unit) has spread widely. In this case, the housing equipment must be selected at the time of planning. Further, there has been an increasing need to fully consider lighting environments created by the location of a TV set and a desk besides windows, lighting equipment, etc. On the other hand, people are highly amenity-oriented these days (amenity means comfort given by places, air-conditioning, visual perception, etc). For this reason, there has been a need for a housing plan that fully utilizes a limited space to quickly provide satisfactory living environments in which an internal space looks excellent and residents feel good and comfortable both mentally and physically. These are important not only when building new houses but also when repairing houses. Also, these have become important for places where a plurality of people work in or use such as shops, offices, etc. However, it is expensive to employ a conventional experimental method using a miniature to plan optimal individual houses to satisfy various requests from users or owners, particularly in Europe, America, and Japan where laboring costs are high. Further, it is difficult, in practice, to respond quickly to their requests. Given these circumstances, a computer technology which has rapidly advanced in recent years has been adopted to perform an evaluation on 3-D (three-dimensional) living environments by producing virtual living environments. This enables a quick, inexpensive evaluation on the air-conditioning, lighting, sound, etc. This is a so-called computer simulation. Moreover, the simulator enables one to easily experience a simulation in a realistic way by producing a virtual space called a virtual reality using the simulation result. Reviews of existing virtual reality simulators are given in "The Virtual Dimension" by Clive Davidson, Image Processing, Winter 1991 and in "The Electronic Library Manager's Guide to Virtual Reality" by David Raitt, The Electronic Library, Vol. 9, No.1, February 1991. Thus, a massive amount of analysis data necessary at the time of planning can be collected efficiently. The simulation is considered to be used for a proposed-type sales technique; end users such as customers (residents-to-be) or a salesman can experience a simulation of housing environments prior to construction. This is important, particularly, in a case where houses of a same standard, such as condominiums, ready-built houses, and office buildings, are mass-produced for sale. Conventionally, the simulation results are displayed on a CRT (cathode-ray-tube) or domed display in two-dimension, or displayed in three dimension through a stereoscopic parallax using a pair of stereoscopic glasses to evaluate the performance a house would exhibit when it is completed. In this case, the cost performance of the simulator is upgraded due to the advancement of hardware. For example, as is shown in FIG. 1, the simulator comprises a goggle-type stereoscopic display unit 11, a computation control unit 13, and a 3-D input unit 12, and one can experience a realistic simulation to observe how the internal of a virtual, stereoscopic room produced in the goggle-type stereoscopic display unit changes by changing an angle or a location. Note that the goggle-type stereoscopic display unit 11 includes two compact image forming devices for each eye, and an image of a device or the like formed for both eyes is displayed in accordance with not only a distance (longer the distance, smaller the image), but also a certain parallax to each eye. Accordingly, a stereoscopic, perspective image as if seen through the real eyes in real environments can be produced. Also, a menu or the like can be displayed when it is necessary. Further, a so-called data glove, such as the one shown in FIG. 1, is generally used as the 3-D input unit 12 since both eyes are covered with the goggle-type stereoscopic display unit 11. The data glove 12 is a glove made of cloth embedded with a considerable amount of expandable/contractible wavy or spiral metal strips: when one moves his hand or fingers for a switching manipulation or similar movement, the content of the movement can be detected by the expansion or contraction of the above-mentioned metal strips. Commands entered into the simulator corresponding to the movements of the hand or fingers have been determined in advance, and thus, various commands can be entered by the movements of the hand or fingers, making a simulation within the virtual space possible. Further, equipped at the top of a monitor's head is a magnetism detecting pointer 15 for three directions: up-and-down, right-and-left, and front-and-rear. The magnetism detecting pointer 15 detects the change of the strength in three directions in a magnetic field generated by a magnetic-field generating unit 14 to detect an inclination of the head to reflect the same in a view field within the virtual space produced in the goggle-type stereoscopic display unit. The magnetism is used herein because the detection by light is susceptible to interior illumination and the detection by sound is susceptible to outside noise. A method as follows is adopted as a necessary means for stereoscopic display: the locations or geometry of devices, a house, walls, windows, etc. are defined by 3-D coordinates by giving an x-coordinate to the east-and-west direction, a y-coordinate to the north-and-south direction, and a z-coordinate to the direction perpendicular to the x-y plane, and z = h to a height to the eyes to calculate the parallax or visible geometry or sizes. Numeral 1300 in FIG. 1 shows a conception of input geometry or the like. If one changes his location after putting the simulator on, he can experience how the visual and auditory perception change to some extent. In this case, the change in location is detected based on the detection of a magnetic field, generated by the magnetism generating unit 14, by the magnetism detecting pointer 15, which requires fewer detecting pointers, is of simple structure and is independent of sound and light. According to the above construction, not only the devices installed in the room, but also thermal environments or lighting environments by illumination can be displayed stereoscopically as shown in FIGS. 2A, 2B. In FIG. 2A, numeral 22 shows air circulation produced by an air-conditioner 21 and numeral 23 shows contour lines of a temperature-distribution analytic index. In FIG. 2B, numeral 25 shows contour lines indicating an illuminance distribution produced by the illumination by a chandelier 24. FIG. 2C shows a monitor experiencing auditory environments by a stereo-headphone 26. Rules and facts necessary for calculations of the aforementioned are as follows: (1) A solid angle of a device in a view field is inversely proportional to a square of a distance from the eyes. (2) The parallax of both eyes is inversely proportional to the distance. (3) The luminous energy from a light source and volume from a sound source are inversely proportional to a square of the distance. (4) The directivity, the contents of frequencies, etc. of light or sound from lighting devices or the sound source respectively, the change of a reflection factor depending on an incident angle at a reflecting surface, an absorption factor by the devices and an attenuation factor by air or glasses of light or sound, etc. will be fixed once conditions are given. (5) Likewise, a specific heat and viscosity of air, an amount of radiation heat from a heat source, and heat properties of each device or the like will be fixed once conditions are given. (6) Various analytic equations such as Euler's equation and successive equations. Note that these are not the gist of the present invention, and are described in the textbooks of mathematics, drawings and physics. An application where sound is also reflected on a 3-D visual display, or a program technique that displays a menu for program selection instead of an object such as a house are known arts and described in "ARTIFICIAL REALITY" Myron Krueger, Addison-Wesley, Inc., etc. Also, various equations or analytic methods including an interpolation, a numerical differentiation and integration, a calculus of finite difference, a transition matrix method, and a finite element method are also well known arts. Thus, the explanation thereof is omitted. However, to select a subject such as a building and room or environment elements to be evaluated from a menu with the conventional 3-D input unit 12 of the data glove, the data glove 12 must be moved to where it can hold the menu drawn within a 3-D space. Thus, one must move his arms while keeping his balance with putting the goggle-type stereoscopic display unit 11 on his eyes. In addition, one must remember rules to enter the commands by the movement of fingers, which are rarely adopted. Thus, the manipulation efficiency is considerably low. This is important for a designer unfamiliar with the simulator or a customer wishing to experience a simulation in sales engineering. Also, to select furnishings in a room (stationary devices such as walls or windows), or equipment to be relocated (non-stationary devices such as the lighting devices, air-conditioner, and washing machine), one must move one place to another within the virtual space. Hence, one must walk around with the goggle-type stereoscopic display unit 11 on. However, the magnetic field used to detect the location of the goggle-type stereoscopic display unit 11 covers a radius of 2m at most. If one must move beyond 2m, a method such that designates a walking-movement by a previously determined move command from the data glove 12 must be adopted. For example, one must move towards a direction that a displayed finger designates. If the number of subjects of the simulations is to be increased, it is necessary to increase the rules to be remembered, which does not provide an optimal man-to-machine interface. Also, since the data glove 12 is not used often, it becomes complicated and expensive. To evaluate the simulation result of the living environments as planning data, observation methods in which a monitor moves to a location subject to evaluation within the virtual space, or physical amounts such as illuminance are displayed by contour lines on a cross section of the virtual space must be employed. However, it is not preferable to walk around with one's eyes covered with the goggle-type stereoscopic display unit 11 even within a room. Thus, the observation may prove unsatisfactory because one pays attention to his walking-movement. In particular, it is not impossible but difficult for a construction company or a sales company to let the end user, or namely residents-to-be or buyers-to-be, experience a satisfactory simulation of the environments of a house subject to construction or sale. Also, it is difficult to observe sensible temperatures or winds associated with changes of one's location, which are indispensable in selecting or placing the air conditioner or the like. However, this is absolutely necessary not only for the general housing but also for shops. Information of the wind, temperature, light, sound, etc. for either the entire room or a cross section can be collected; however, information at a specific location, which are indispensable when planning a comfortable living space, can not be collected easily. Also, although it is often that a number of people exist in one room of individual houses or the shops, the simulation neither considers this situation nor mutual affects. Also, the planning data and experiences as to the behavior or mutual affects or effects of a number of people both under general circumstances and at emergency can not be collected. However, this is important for the housing, shops, etc. In addition, the lighting affects on the house and devices installed therein are not displayed accurately; moreover, an intensity is not displayed effectively, thereby making it difficult to evaluate a sense of shade and shadow. When one sees the outside from the inside and vice versa, only external or internal walls are visible. Thus, it is difficult to evaluate the individual house or interior of the entire room in relation with the external of the room or individual house. This is critical for a house with a garden or a restaurant with a garden the customers would appreciate. Although affects by outside noise associated with the opening or closing of the windows are important in the cities, it is difficult to evaluate these affects intuitively. If one is not familiar with the simulator, he may walk out of the room because of incorrect manipulations, and it is not easy to find his current location to walk back to the room. In addition, although the designer can imagine the changes in various housing environments due to the changes of planning conditions, they may have difficulty in understanding the changes intuitively. This is important for an inexperienced designer. Besides, it is inconvenient to collect intuitive planning data. In the sales engineering, it is difficult to let the customers experience a simulation associated with the changes of the environment conditions such as internal luminosity produced by switching the lighting on and off, opening and closing of the windows, etc. quickly and intuitively to satisfy their various requests. Also, although evaluations on the location of mirrors, the color of the show window and illumination or the like are indispensable for the shops, it is difficult to experience the aforementioned quickly and intuitively. For these reasons, there is an increasing need for a 3-D input unit and a goggle-type stereoscopic display unit that can realize the evaluation of the living environments with a satisfactory man-to-machine interface. SUMMARY OF THE INVENTION The present invention has an object to solve the problems caused by the conventional simulator. Accordingly, the present invention has a primary object to provide a simulator for producing the living environments mainly for visual perception, which enables one to sense a temperature, wind, comfort, etc. he would feel at a specific location associated with the change of his location within the room in relation with other people. The present invention has the following objects: The present invention has an object to provide a simulator for producing the living environments mainly for visual perception and additionally by sound using less number of rules to be remembered for manipulations to select or replace devices, equipment or the like installed in a room. The present invention has an object to provide a simulator for producing various living environments including individual houses, shops, offices, etc. mainly for visual perception. The present invention has an object to provide a simulator for producing the living environments mainly for visual perception and additionally by auditory perception, which is inexpensive, easy to manipulate, excellent in contents of simulations. The present invention has an object to provide a simulator for producing the living environments mainly for visual and auditory perception with a consideration of a plurality of people being in the room and their mutual affects. The present invention has an object to provide a visual, intuitive simulator for producing the living environments mainly for visual perception with a consideration of a relation with and affects of the internal and external of the room. The present invention has an object to provide a simulator for producing the living environments mainly for visual perception, and with which a customer and a house designer can experience changes caused by the replacement of the devices besides various senses, and obtain various planning data quickly and intuitively in the sales engineering. The present invention has an object to provide a simulator for producing the living environments in the sales engineering mainly for visual perception, which can be operated by the movements similar to manual manipulations without any danger and difficulty, and with which one can correct manipulation errors easily, and hence which is effective in the sales engineering. The present invention has an object to provide a simulator for producing the living environments mainly for visual perception, which is effective to be intuitive in educating house designers and collecting technical data. The present invention has an object to provide a simulator for producing the living environments mainly for visual perception, which is applicable not only to individual houses but also to the shops and offices or the like. The present invention has an object to provide an inexpensive simulator for producing the living environments mainly for visual perception. The present invention has an object to provide a visual simulator fully effective for sound in the living environments. The above objects are fulfilled by a simulator as defined in claim 1. Further refinements are set out in the dependent claims. BRIEF DESCRIPTION OF THE DRAWINGS These and other objects, advantages and features of the invention will become apparent from the following description thereof taken in conjunction with the accompanying drawings which illustrate specific embodiments of the invention. In the drawings: FIG. 1 is a schematic view showing a structure of a conventional housing environments simulator; FIG. 2A is a view showing a display example of the analysis result of thermal environments; FIG. 2B is a view showing a display example of the analysis result of lighting environments; FIG. 2C is a view showing the analysis result of sound environments being outputted; FIG. 3 is a schematic view showing a structure of a simulator in accordance with a first embodiment of the present invention; FIG. 4 is a view showing an outward appearance and operation instructions for a 3-D input unit 30 for a menu selection in the first embodiment; FIG. 5 is a view showing an internal structure of a computation control unit 13 in the first embodiment; FIG. 6 is a view showing a 3-D menu and 3-D beams for the menu selection in the first embodiment; FIG. 7 is a view showing a process for producing stereoscopic vidual environments associated with a monitor's walk-through in a second embodiment; FIGS. 8A-8D are views showing a room and the external thereof displayed during walk-through within the room in the second embodiment; FIGS. 9A and 9B are views showing display examples when a soft-robot of a third embodiment walks around in the room; FIG. 10 is a view explaining a process for vidual information associated with the change of the soft-robot's location in the third embodiment; FIG. 11 is a view showing a process and data input inherent to the third embodiment; FIG. 12 is a view explaining a calculation process in the third embodiment; FIG. 13 is a flow of a process for the display movement relative to the soft-robot in the third embodiment; FIG. 14 is a view showing the soft-robot displaying a temperature distribution relative to people in a room in a easier way by changing the colors of its portions in the third embodiment; FIG. 15 is a view showing a flow of warm air from an air conditioner by a sway of strings attached on the head of the soft-robot in the third embodiment; FIG. 16A is a view showing shades on the face of the soft-robot caused by an illumination by a chandelier only in the third embodiment; FIG. 16B is a view showing the face of the soft-robot brightly illuminated by the chandelier and spot-lights in the third embodiment; FIG. 17A is a view showing the expression of the soft-robot when a soundproof window sash is used in the third embodiment; FIG. 17B is a view showing the expression of the soft-robot when a typical window is used in the third embodiment; FIG. 17C is a view showing the expression of the soft-robot when a window is open in the third embodiment; FIG. 18 is a flowchart detailing an analytic process to enable simulations of lighting and illumination environments within a room in accordance with a fourth embodiment; FIG. 19A is a view showing a room divided into a plurality of meshes with a virtual partition for analysis in the fourth embodiment; FIG. 19B is a view showing a room divided into a plurality of meshes with a virtual mirror for analysis in the fourth embodiment; FIG. 20 is a view showing a stereoscopic display of a virtual space as the result of the analysis in the fourth embodiment; FIG. 21 is a view showing trees outside of the room with a transparent wall within the virtual space in the fourth embodiment; FIG. 22 is a view showing a virtual plane and a display example of contour lines of illuminance within the virtual space in a fifth embodiment; FIG. 23A is a view showing a room temperature as a physical value within the virtual space when a virtual sensor is equipped at a specific location in the fifth embodiment; FIG. 23B is a view showing a room illuminance as a physical value within the virtual space when a virtual sensor is equipped at a specific location in the fifth embodiment; FIG. 24 is a view showing an outward appearance of a goggle-type stereoscopic display unit 11 and movements and rotation associated with its manipulation in the fifth embodiment; FIG. 25 is a view showing a display example when a plurality of soft-robots are walking through in a sixth embodiment; and FIG. 26 is a view showing an inherent structure of a computation control unit necessary to display the plurality of soft-robots in the six embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS First Embodiment In the following, an embodiment of the present invention will be explained with referring to the drawings. FIG. 3 is a schematic view showing a structure of a simulator in accordance with the first embodiment of the present invention. FIG. 3 is identical with FIG. 1 except that the data glove 12 is replaced with a 3-D input unit 30, or a so-called 3-D mouse. In FIG. 3, a signal that a monitor inputs by the 3-D input unit 30 while watching the goggle-type stereoscopic display unit 11 is outputted to the goggle-type stereoscopic display unit 11 again via the computation control unit 13. FIG. 4 is a view showing an enlarged outward appearance of the 3-D input unit 30 of this embodiment to explain the operation and manipulation thereof. The 3-D input unit 30 is of a configuration similar to a grip of a pistol; a trigger switch 31 is furnished at a trigger and a right button 32, a central button 33, and a left button 34 are furnished on the top. These switch and buttons or the like are used for specific purposes, which will be described later. Also, a magnetism detecting pointer 35 and an accelerometer 36 are installed therein for each direction in 3-D: up-and-down, left-and-right, and front-and-rear. By comparing the strengths of the three directions in the magnetic field detected by the magnetism detecting pointer 35 and detecting an direction of the gravity and acceleration by the accelerometer 36, the changes of rotational angles, movements, or acceleration of the 3-D input unit 30 with respect to the magnetic field indicated by arrows in FIG. 4 can be detected. Further, the 3-D input unit 30 is used for specific purposes by switching depending on the simulation contents, which will be explained in another embodiment. FIG. 5 shows an internal structure of the computation control unit 13. A signal inputted through the 3-D input unit 30 by a user using the goggle-type stereoscopic display unit 11 enters into an input control unit 130. An analog signal for a rotation angle or the like is converted into a digital signal. Of course, signals from the switch and buttons are directly inputted. Further, the signals are sent to each computation unit to be processed depending on the contents. In other words, if information relates to a manipulation to select a menu for a building, a room, environment elements drawn in the goggle-type stereoscopic display unit 11 or to a manipulation of semi-infinitely long 3-D beams to be used for the above menu selection, the signals are sent to a 3-D menu·3-D beam coordinate computation unit 131 and a 3-D menu·3-D beam display data computation unit 132; if the information relates to the walk-through within a room, the signals are sent to a 3-D space moving speed vector computation unit 133 and a 3-D space display data computation unit 134; further, if a soft-robot will be formed within a view field of the goggle-type stereoscopic display unit 11 to be operated, the signals are sent to a soft-robot moving speed vector computation unit 135 and a soft-robot display data computation unit 136. Other than the above, the signals are sent to other processing units or computation units depending on manipulations, and each of which will be explained where necessary. All of these signals are sent to a display control unit 137 in the end. The signals are converted into electric signals necessary to generate and display a given video in the goggle-type stereoscopic display unit 11 depending on the contents of the manipulation, and further sent to the goggle-type stereoscopic display unit 11 again. Other than the above components, the computation control unit 13 also includes: an input unit and a memory for the geometry and locations of houses, devices installed in the room, and lighting devices subject to simulation or selection thereof, and physical properties such as the reflection factor of each point; another memory for a program for performing mesh-division and computations necessary for the analysis of the aforementioned; an input manipulation unit for manual input by a user, etc. These components will be described in other embodiments where necessary. Certain environment conditions have been precisely or roughly computed or analyzed to be stored to enable a quick response, and a memory for this purpose is additionally included, which will be also described in another embodiment where necessary. In the following, the operation and effects will be described specifically with referring to the drawings. In the first place, the menu selection will be explained with referring to FIG. 6. In FIG. 6, a 3-D menu drawn in a space produced by the goggle-type stereoscopic display unit 11 is shown. In FIG. 6, prospective houses for selecting a house whose internal environments are subject to simulation are displayed on a screen. A user selects one of six houses in the form of icons using the 3-D input unit 30, with which he would like to experience a simulation. Besides the houses, semi-infinitely long 3-D beams 61, 62 are drawn on the screen to be used for the selection. The 3-D beams 61, 62 vary their directions or the like in response to the manipulations of the movements, rotation and inclination of the 3-D input unit 30, and irradiating the same to any of the displayed houses enables the selection of the house that the user would like to experience the simulation with. To be more specific, prior to the walk-through within the room, the 3-D menu is displayed by a push of the central button 33 of the 3-D beam unit 30 to irradiate the drawn 3-D beam 61 on the 3-D icon of the house that one would like to experience the simulation with, then a confirmation command is entered with the trigger switch 31. According to the above, the selected housing environments are displayed virtually. Thus, the user neither has to change his location nor manipulate the data glove 12. Next, the contents of the computation by the 3-D menu·3-D beam coordinate computation unit 131 and 3-D menu·3-D beam display data computation unit 132 in the above case will be explained. In this embodiment, the 3-D beams 61, 62 are shown as semi-infinitely long bars having the 3-D input unit 30 as a starting point. The central coordinate of the cross section is fixed by a 3-D polar coordinate for a display or the like. For this reason, the intersection with the icon displayed on a 3-D virtual space expressed by the mutually orthogonal coordinates of three directions can be found easily by a simple calculation using an angle of the 3-D input unit 30 to the magnetic field after the origins of the both coordinates are added and the coordinate axes are adjusted. If the confirmation command is entered under these circumstances, the icon corresponding to the angle of the 3-D input unit 30 to the magnetic field is selected. For this reason, selections can be made from the menu as if one were pointing at specific goods displayed in a shop by a baton or finger. Note that the selection manipulation with the 3-D unit 30 held in hand of the user also makes it possible to fix the starting point of the 3-D beam at the center of the user's eyes. Accordingly, the menu can be selected as if one were selecting (indicating) the goods or the like that caught his eyes at the shops while turning his head from the left to the right and vice versa. These operations are performed by the rotation manipulation of the user's wrist holding the 3-D input unit 30 or the head and the pushing of the buttons by a finger. For this reason, not only the user does not have to remember the complicated manipulations but also the manipulation is similar to one's natural movements. Hence, it is easy to learn how to use the simulator. Moreover, it is not necessary to keep a balance with one's eyes covered with the goggle-type stereoscopic display unit 11. Note that the selection by the 3-D beams can be applied to the selection of any environment elements besides the buildings that one would like to evaluate, such as the selection of the type of the air conditioners and turning on or off of the air conditioner. Also, it can be applied to the selection or change of a partial environment conditions as per user's request, such as the change of placement, replacement, and turning off or on of the devices coming into his view as he walks through the room. Second Embodiment Another embodiment of the present invention will be explained with referring to the drawings. The second embodiment relates to a way of experiencing the simulation and a simulation method, or namely walk-through under the housing environments selected in the first embodiment. Thus, the basic structure or the like is identical with the first embodiment. Hence, the explanation of the like components will be omitted and only the structure and operation inherent to this embodiment will be explained. The walk-through referred herein means that the user looks around the room virtually produced and turns off or on the devices equipped therein, so that he can experience a simulation of the environments such as rooms, illumination, sound as if they were real. In the following, a process of the walk-through will be explained. FIG. 7 is a view showing 3-D visual information processing in this embodiment. In FIG. 7, numeral 13 is the computation control unit and numeral 11 is the goggle-type stereoscopic display unit. As is denoted by numeral 71, the housing environments have been inputted into a main memory for virtual-environment display by the 3-D coordinates in advance. Also, assume that the user's dominant eye is the left eye, then as is denoted by numeral 72, the user's eyes are inputted into the 3-D coordinates in an auxiliary memory in the same direction and measurement using the left eye as a standard. The location and eye ray direction or the like are manipulated by the 3-D input unit 30. In other words, by inclining the 3-D beam unit 30 called the 3-D mouse in each direction as shown in FIG. 4, the rotation angle information is inputted into the 3-D space moving speed vector computation unit 133 via the input control unit 130 in the computation control unit 13, and a moving speed and a direction of the walk-through and hence the location of the eyes from the starting point are calculated depending on the degrees and direction of the rotation angle. Next, a location adjustment 73 is done by producing the housing environments seen through the left eye by matching the origins of the coordinates and coordinate axis lines of both the memories. A distance calculation 74 calculates a distance of each point within the room from the left eye. Subsequently, a solid angle calculation 75 of each device or the like installed in the house is performed. Also, a parallax calculation 76 is performed for each point within the room based on the distance calculation result of a distance d between the eyes and a distance to the devices or the like. A view-field adjustment 77 is performed by generating a view field seen through the right eye based on the results of the solid angle and parallax calculations. Accordingly, the calculation result of the solid angle is directly outputted as a left view field 78, and the result of the view-field adjustment is outputted as a right view field 79, which are further sent to an LCRT 111 and a RCRT 112 in the goggle-type stereoscopic display unit 11 respectively, so that a stereoscopic display associated with the change of one's location is realized. In addition, each process is mainly performed by the 3-D space display data computation unit 134 and 3-D space moving speed vector computation unit 133. Here, illuminance or the like at each point within the room is irrespective of the existence of the user and coordinates of the location except for a case where there are a plurality of people or the like. For this reason, the illuminance or the like at each point within the room has been calculated in advance to be used for the display corresponding to the user's view field. Next, how the view field changes when the user walks through within the virtual house with the simulator constructed as above will be shown. FIGS. 8A, 8B, 8C, and 8D show this. FIG. 8A shows an outward appearance of the house selected for simulation from the menu drawn in the goggle-type stereoscopic display unit 11, and a door can be seen in the front. FIG. 8B shows a situation where the user approaches to the door by inclining the 3-D input unit 30 forward. FIG. 8C shows a situation where the user enters into the room through the door, and a window on an opposing wall can be seen. Subsequently, the user rotates the 3-D input unit 30 to the right by twisting his wrist to the right, so that the user changes his direction easily to see the door on his right and the window on his left. Of course, by moving the 3-D input unit 30 up and down, a close-up display of the vicinity of the ceiling or the floor can be seen. Also, in this embodiment, the input manipulation can be performed by the magnetism detecting pointer 15 placed on the user's head instead of the input manipulation by the rotation angle using the 3-D input unit 30 held in hand. Note that to distinguish from a selection mode of the above mentioned 3-D menu, the manipulation of the 3-D input unit 30 may be performed by keeping the trigger switch 31 pressed down. For the above reasons, the user can manipulate the simulator naturally as if he were using a joy stick of a TV game or a control stick of a helicopter. In this embodiment, the user's moving speed can be changed by the absolute value or degrees of the inclination or rotation angle of the 3-D input unit 30; however, the explanation thereof is omitted as an applied principle is simple. Third Embodiment Another embodiment of the present invention will be explained with referring to the drawings. Like the second embodiment, this embodiment also uses the structure of the first embodiment. For this reason, the explanation of the like components in the first embodiment is omitted. In the sales engineering for general users, particularly for the customers such as the residents-to-be or the buyers-to-be, the confirmation of the atmosphere created by the illumination or the appearance of the room during the walk-through are most important. However, when a house designer or an equipment designer uses the simulator of the present invention, it is necessary to display detailed, visualized physical phenomenon. Further, in case of buildings used for business such as coffee shops, movie theaters, dance halls, how the users feel about the internal equipment, lighting devices, etc. and what affects they will bring about on the users are the prime concern for the mangers of the coffee shops or the like. For this reason, as a means to show a massive amount of 3-D data as the result of the numerical value simulation in a specific manner, a method for drawing a virtual cross section of the room to display the temperature distribution by the contour lines thereon as shown in FIG. 2A, or a method so-called "particle path display" (traces of the particles are shown in different ways) for visualizing a wind speed by dispersing particles within the room as shown in FIG. 2B have been adopted. Also, as for a means to obtain the values of a detailed evaluation at a specific location, there is a method to move the 3-D input unit 30 to a concerned location assuming the 3-D input unit 30 as a virtual sensor to calculate the temperature or the like at that location to display the same, or to display values which have been calculated in advance as virtually measured values. However, it is difficult to understand intuitively and see how people actually feel the temperature or the like, or how these values change in relation with people or the location. In this embodiment, a soft-robot 90 shown in FIG. 9 is used as the solution of this problem. The soft-robot 90 is a virtual human as an observer's or namely user's alter ego or a third party, which can visually express the temperature or the like one would feel. In this embodiment, the soft-robot 90 is produced in the internal space, so that the designer or the like can visually observe the environments this virtual human feels to solve the above problem. To be more specific, the soft-robot 90 walks through the room entirely for the user, and the soft-robot 90 changes colors in each portion in response to the physical values of the environmental conditions or the change thereof caused by the change of its location or the turning-off or turning-on of the devices. By so doing, not only the physical values such as the room temperature or the wind speed at its current location, but also the distribution of the effective temperature, a temperature with a consideration of wind affects, and the air capacity or wind direction can be displayed by changing the swaying of the hair or the expression. As a result, an efficient, objective, and visual evaluation can be realized in relation with the people. Further in this case, by displaying the effective temperature or air capacity on each portion of the robot, the result will be not only realistic but also effective. This is important when discussing the placement of tables or air conditioner or the like in the coffee shops. In the following, the change of the soft-robot 90's location within the room, which is the basis of this embodiment, will be briefly explained. The situation where the soft-robot 90 changes its location within the room is displayed in FIGS. 9A and 9B. The manipulation is substantially the same as the aforementioned walk-through by the user, and for this reason, this is done by the 3-D input unit 30. Further, the moving direction of the soft-robot 90 is judged based on either the eye-ray direction of the user or soft-robot depending on the selection of the user. Also, the soft-robot moving speed vector computation unit 135 and soft-robot display data computation unit 136 perform processing necessary for various displays associated with the change of the soft-robot's location. More specific explanation will be given in the following. FIG. 10 shows processing of visual information associated with the walk-through by the soft-robot 90 of this embodiment. In FIG. 10, numeral 13 is the computation control unit and numeral 11 is the goggle-type stereoscopic display unit 11. The housing environments denoted as numeral 71 have been produced in the main memory for virtual environments display using the 3-D coordinates in advance. As to visual environments, what is stored in the main memory is used directly as the view field 78 for the left eye, and used as the view field 79 for the right eye after a parallax adjustment of the environments 761. On the other hand, as is shown by numeral 72, the location of the soft-robot 90 from the base point is generated in the auxiliary memory with the 3-D coordinates by placing the left eye in the center. A visual signal relative to the soft-robot 90 is inputted into and outputted from a display process 1361, and used for the view field 78 of the left eye directly, and used for the view field 79 of the right eye via a parallax adjustment process of the soft robot 762. Subsequently, the visual signals for left and right eyes are respectively sent to the CRT 111 for the left eye and the CRT 112 for the right eye to produce the stereoscopic environments. Note that the changes of the soft-robot's and user's location are distinguished by the switching of the buttons of the 3-D input unit 30 shown in FIG. 4, but another method such as replacing the 3-D input unit with another 3-D input unit used for this purpose only may be adopted. Also, the goggle-type stereoscopic display unit 11 or 3-D input unit 30 may incorporate a microphone, so that a verbal instruction can be inputted. In this case, words used as input instruction such as "go" or "stop" are relatively short and the number thereof is limited. Hence it is easy to recognize the verbal instructions and the explanation thereof is omitted. If only the environments within the room are to be simulated visually through walk-through by the soft-robot 90, then only the outline of the soft-robot 90 need be displayed in bold. Next, the structure and operation necessary to display the physical conditions of the environments at a concerned location in the room by changing the expression and colors of the soft-robot will be explained with referring to the drawings. FIG. 11 shows a process or data input necessary for this purpose. In FIG. 11, various data relative to the environments in a room such as the size, geometry or the like of the room, location of the air conditioner, direction of the ventilation, size and location of furniture, location and illuminance of the lighting devices, size and location of windows, are inputted as environment data 1101. Based on the environment data, internal environment condition is calculated as an environment analysis 1102. Data relative to the change of the data relative to symbols such as soft-robot and its various expressions or the like, or the symbols in response to the physical environments of the room are inputted as symbol data 1103. To be more specific, the data related to how colors and brightness should be changed to the sensible temperatures, how the hair or strings representing hair should sway to the wind speeds, and how the expression should change to outside noise. A designation for a location where the symbol such as the soft-robot or the like exists or locations and physical values or the like of the living environments subject to display is inputted by a keyboard, mouse or the like as a symbol designation 1104. A symbol computation 1105 is a computation necessary to display the designated environments in the form of the symbol based on the analysis result calculated based on the input environment data and the data relative to the symbol; for example, computations necessary for the display of the sensible temperature distribution on the soft-robot, and determination or production of the soft-robot's expression corresponding to the outside noise. A prior storage 1106 means to store in advance various conditions including thermal, optical, acoustic conditions for each point in the room calculated based on the input living environment data or the like into another memory. Accordingly, a response to various display requests from the user can be made quickly. Further in this case, illumination and air conditioning or the like are calculated by a unit of an output of the respective devices to be stored in advance; for example, the internal temperature at each point is calculated under the situation where the air conditioner's output is 500W, 1kW, or 1.5kW, and the external temperature is 10°C, 5°C, 0°C, or -5°C as the external environments. Since the affects from the soft-robots to the environment conditions are small when there are a small number of soft-robots (100w/h people), the change of the soft-robots' locations is not reflected on the environment conditions. A symbol computation display 1107 means to produce the content of the symbol corresponding to the result of the symbol computation in a visible form on the screen. To be more specific, the computation result of a sound strength is displayed by a value in a unit of db on the CRT, or the sensible volume may be shown by showing the expression for comfortable or uncomfortable on the soft-robot, which will be explained more in detail later. Next, a display process for the computation result using the soft-robot will be explained with referring to FIG. 12. As shown in FIG. 12, the process comprises environment analysis and prior storage process (1201), a soft-robot producing process (1202) where the soft robot is produced, a calculation result and soft-robot synthesizing proces (1203) where the environment analysis result at the soft-robot's location is displayed on the soft-robot using the results of the steps (1201), (1202), and a soft-robot display (1204) where the result of the step (1203) is displayed. The environment analysis and prior storage process 1201 corresponds to the environment analysis 1102 and prior storage 1106 in FIG. 11, and similarly, calculation result and the soft-robot synthesizing process 1203 corresponds to the symbol computation 1105, and soft-robot display 1204 corresponds to the symbol display 1107. In the environment analysis, a general work station is used, and for example, the following simulation calculation will be performed: internal temperature distribution (steady state and unsteady state); traces of warm or cool air flowing from the air conditioner; calculation of a distribution of a comfort index such as of PMV or the like; calculation of an evaluation on internal appearance, internal illuminance and intensity distributions or the like by the lighting devices relative to the lighting environments; and calculation of reverberation characteristics used to evaluate the chamber acoustic relative to sound environments and an evaluation on sound-insulation characteristics for the outside noise. Although other methods are employed as well, the explanation thereof is omitted since they are not the gist of the present invention. Next, the producing of the soft-robot, calculation result and soft-robot synthesizing and display of the soft-robot necessary to display the results of the various calculations by the soft-robot, which are inherent to this embodiment, will be explained more in detail with FIG. 13. In FIG. 13, a solid line shows the calculation flow, and a dotted line shows the data flow. Also, steps (s1)-(s4) relate to the process of the soft-robot producing, steps (s5), (s61), (s62), (s63) and (s64) relate to the process of calculation result and the soft-robot synthesizing, and (s7) relates to the calculation process of the soft-robot display. In the soft-robot producing, soft-robot object data are inputted in the first place (s1). The soft-robot objective data (D2) are obtained by performing a soft-robot object generation by a CAD (s8) to generate CAD data (D1), which are converted into the object data for the CAD data simulation (s9). Next, internal object data are inputted (s2). The internal object data (D3) are generated by sharing a mesh coordinate file (D4) used when performing the environment analysis simulation (s10). Next, with respect to the change of the soft-robot's location, a moving direction of a soft-robot 90 by a 3-D input unit 30 is inputted (s3), and subsequently, the soft-robot is moved based on the input information (s4). In the calculation result and soft-robot synthesizing, a content of display by the soft-robot is selected (s5). Here, for example, when the temperature distribution or comfort evaluation index PMV distribution relative to the thermal environments, and illuminance distinction or intensity distribution relative to the lighting environments are selected to be displayed in a color contour, then the color distribution on the soft-robot is performed (s61); when the air circulation from the air conditioner relative to the thermal environments is evaluated, tufting is performed so that strings attached on the head of the soft-robot will sway (s2); when the shade on the face of the soft-robot relative to the lighting environments is evaluated, shades are added on the face of the soft-robot (s63); further, when the expression of the soft-robot is changed in response to the sound environments, an expression is added on the face of the soft-robot (s64). To execute the steps (s61)-(s64), the mesh coordinate file D4 must be shared with the environment analysis simulation calculation process as it was with the internal object data input process in (s2), and environment analysis simulation data D5 are required. Further, for the color distribution on the soft-robot in the step (s61), a color distribution table D6 is required; after the environment analysis simulation data at the location of the soft-robot are written in, a color value previously set by the color distribution table D6 is taken out based on the written data to put corresponding colors on each portion of the soft-robot. Also, for the tufting of the soft-robot in the step (s62), after the environment analysis simulation data at the location of the soft-robot are written in, the strings attached to the soft-robot are swayed based on the direction and size of the circulation vector at the soft-robot's location. To add the shade on the soft-robot's face in the step (s63), a color distribution table D7 is required; after the environment analysis simulation data at the location of the soft-robot are written in, the shades are added on the face based on the illuminance and intensity at the soft-robot's location. Further, to add the expression on the face of the soft-robot in the step (s64), an expression table D8 is required; after the environment analysis simulation data at the location of the soft-robot are written in, an expression is selected from the expressions previously set in the expression table D8 based on the sound at that location of the soft-robot to be added on the face of the soft-robot. Finally, to display the soft-robot, the environment analysis simulation result is displayed by the soft-robot based on the aforementioned calculations using the simulator. FIG. 14 is a screen displaying the internal temperature distribution by the soft-robot 90. In FIG. 14, the air conditioner 21 is attached on the left wall, which is turned on to circulate warm air from the outlet at the bottom, and there is a window 1421 on the right wall opposing to the air conditioner 21. The values of the temperatures and winds in the living environments associated with the aforementioned have been calculated and stored in advance as previously explained. Assume that the output of the air conditioner is 500W and the outside temperature is 0°C, and the soft-robot 90 walks through within the room: the soft-robot 90 moves away from the air conditioner 21, or from the center of the room to the window 1421. In this embodiment, the temperature distribution and comfort index PMV at a specific location in the room are shown by three colors on the soft-robot 90: the head, trunk, and legs. When the soft-robot 90 stands at the center of the room, the three parts of the soft-robot 90 show substantially the same bright color (white in the drawing) based on the environment data of the room, which indicates that the temperature and PMV are adequate. On the other hand, when the soft-robot stands close to the window, legs 1422 are shown darker (shaded) compared with the head and trunk, which indicate that the legs feel rather cold. This is because the warm air from the air conditioner 21 is evenly distributed at the center of the room but it does not reach to the window 1421, causing temperature difference. For this reason, the output of the air conditioner 21 is increased to 1kW to observe the temperature distribution again, and if the result is not satisfactory, the output is increased once again. By so doing, the minimum output of the air conditioner can be found. In this way, the internal temperature distribution can be confirmed locally, precisely, and intuitively. For this reason, the planning of the equipment necessary to regulate the temperature at a comfortable level becomes easier. FIG. 15 is a screen displaying the air circulation from the air conditioner. In FIG. 15, the basic conditions are identical with those in FIG. 14 and the air conditioner 21, which is attached on the left wall, is turned on to circulate warm air from the outlet at the bottom. Also, it is identical with FIG. 14 that there is the window 1421 on the right wall opposing to the air conditioner 21. Assume that the soft-robot 90 walks through from under the outlet of the air conditioner 21 toward the window 1421 under the manipulation of the 3-D input unit 30. The soft-robot 90 is displayed with strings 1501 attached to its head that represent hair. The wind direction and wind force from the air conditioner 21 at the location of the soft-robot 90 can be known by the direction and the angle of the strings when they sway. In FIG. 15, the strings attached on the head of the soft-robot sway vigorously toward the window 1421 under the air conditioner 21, but they hardly sway near the window 1421. Thus, the air circulation caused by the air conditioner can be confirmed locally, specifically, and intuitively in relation with the soft-robot 90. Further, it is possible to observe the winds on each portion by attaching the strings to each portion. Hence, comfortable air conditioning can be easily planned using both the temperature distribution and air circulation. Further, by coloring the soft-robot 90 in accordance with the effective temperature one would feel, which is calculated with the temperature and wind speed, a better evaluation can be obtained. FIGS. 16A and 16b show screens displaying the affects from the internal illumination. In FIGS. 16A and 16B, the chandelier 24 is furnished at the ceiling and four spot lights 1621 are furnished to encircle the chandelier 24. FIG. 16A shows a case where a soft-robot 900 stands at the center of the room when only the chandelier 24 is turned on. In case that only the chandelier 24 is turned on, the entire room is considerably and sufficiently bright to spend a relaxed time; however, the face of the soft-robot 900 is shadowed. In contrast, in case that both the chandelier 24 and spot lights 1621 are turned on as shown in FIG. 16B, it can be seen that the face of the soft-robot 900 is hardly shadowed. From the above, it is evaluated that the lighting environments created by the chandelier 24 are satisfactory when people chat sitting face-to-face on a sofa 1622 placed at the center of the room. However, the lighting environments created by turning on both the chandelier 24 and spot lights 1621 are more excellent in that the other people's expression can be seen clearly. In this case, although it is not shown in FIG. 16A, the user can experience a simulation in realistic lighting environments because even the shadowed face can be displayed in the goggle-type stereoscopic display unit 11. Of course only the face can be enlarged to be displayed by a specific manipulation to enable a more close observation. Next, as to the display of the internal illuminance in this case, the illuminance per output unit (1W) for the chandelier 24 and each spot light 1621 have been separately calculated and stored, and the illuminance from either or both of them is taken out depending on the selection of the illumination condition by the user to be used for the display of the soft-robot after a necessary amendment is added to the given output value. For this reason, it is possible to evaluate a case where only the chandelier 24 is turned on but it has a high illuminance. FIGS. 17A-17C show display screens used for the sound analysis. In FIG. 17, two speakers 1701 are placed on the floor in the front of the room, and the music is on. The sound environment conditions that there is the window 1421 on the right wall and there is considerable noise on the outside have been inputted in advance. In these display examples, the disturbance when one is listening to music is divided into four stages, and the expression of the soft-robot 90 varies in each stage. This is a so-called symbol display. To facilitate the understanding of the evaluation result, the expressions of the soft-robot 90 in each stage are shown at the upper right of the screen for reference. Assume that the soft-robot 90 stands at the center of the room, and evaluation result under the sound conditions to enjoy music is shown by the three cases: when a soundproof window sash with a noise insulation factor of 60 dB is closed; when a typical window with a noise insulation factor of 30 dB is closed; and when the window 1421 is opened. FIG. 17A shows the case when the window 1421 is the soundproof sash window, and it shows that the noise hardly penetrate through the window, enabling one to enjoy music. FIG. 17B shows the case when the window 1421 is the typical window, and it shows that some noise disturbs one to enjoy music. FIG. 17C shows the case when the window 1421 is opened, and it shows it is almost impossible to enjoy music. In conventional sound environments evaluation, an observer puts on a headphone or the like to listen to a reproduced sound. Thus, due to a problem with the hardware, it is difficult to listen to more than one kind of sound at the same time to evaluate soundproof: in what degree one kind of sound is disturbed by the others. However, in this embodiment, sensible sound environments can be evaluated. Of course, the simulator may be modified so that the user can actually experience the sound environments through his ears by putting the headphone on both his ears. In this case, the simulation experience becomes more intuitive since the visual evaluation can be obtained at the same time. Further, in the sales engineering, it is more effective to additionally display each volume of the outside noise and sound from the speakers 1701 in numerical values. Fourth Embodiment In the following, another embodiment of the present invention will be explained with referring to the drawings. Although it is not limited to this embodiment, it is necessary to reflect the illuminance or the like on the display of the house or devices installed therein to experience a simulation visually. Further, in the sales engineering, the visual perception is the most important factor in effect. This embodiments relates to a simulation in various visual environments. In the following, a procedure, or a base of a lighting environments analysis which is a preposition of the visual simulation, will be explained with referring to the flowchart in FIG. 18. Note that this flowchart is a part of the environment analysis 1102 in FIG. 11. As has been stated, the optical properties such as geometry or reflection factor of the stationary walls, ceiling and floor as well as internal devices have been inputted in advance (t1). The optical properties of the outer surfaces of the aforementioned have been inputted in values for each of three primary colors (RGB) to be fixed. Accordingly, as shown in FIGS. 19A, 19B, the input geometry is divided into a set of meshes (t2). When necessary, a virtual partition 1901 shown in FIG. 19A or a virtual mirror 1902 shown in FIG. 19B can be inputted additionally. The former is used at an intermediate point where nothing exists, for example, when finding a brightness at the height of the eyes, and the latter is used to analyze a symmetric room efficiently. Accordingly, the input reflection factor or the like for each primary color for each mesh is set in a calculator (t3). Subsequently, the optical properties of a light source for each primary color, for example the luminous energy per output unit, irradiation direction and the distribution of the luminous energy (information as to directivity) are inputted (t4). The amount of the received light and reflection on each mesh for each primary color are calculated (t5). Note that the basis of this calculation is that each mesh is assumed to be a new light source and reflects the irradiated light according to a predetermined reflection factor. Every time each mesh repeats such reflections, the luminous energy given from the original light source as an initial value will be attenuated, and such reflections are repeated until the amount of attenuation reaches to a predetermined value with respect to the initial value. The brightness of each mesh is a sum of the luminous energy released from each reflection. As to the meshes on the virtual partition, the amount of light passing through the virtual partition is the brightness. In this embodiment, whether or not the sum of the amount of reflected light for each reflection and for each primary color is within 0.5% of the initial amount of light is judged (t6). If the sum exceeds 0.5%, the reflection is reflected from the mesh to illuminate other meshes in each part of the internal room (t7). If the sum is 0.5% or less, the repetitive-calculation that the light from the original light source is repeatedly reflected at each part (each mesh) to be attenuated while contributing to the illumination on each part (each mesh) ends. Under these conditions, the calculation result of the lighting illumination, or the brightness for each mesh on the outer surface of each object, is written in to be shown on the display. Here, the outer surface of the object is divided roughly but to a degree not to impair the calculation accuracy to save the costs, and each divided mesh is deemed to have the same brightness. Note that to display the visual environments, a certain correction is performed for each pixel of the goggle-type stereoscopic display unit 11. Further, the parallax is adjusted where necessary for the stereoscopic display (t8). As a result, one can see the internal environment with realistic shade and shadow as shown in FIG. 20. Next, the use of the virtual partition 1901 and virtual mirror 1902 will be explained as a modification of the present invention. As shown in FIG. 19A, 100% of the incident light passes through the virtual partition 1901 while maintaining the incident direction. As shown in FIG. 19B, 100% of the incident light reflects by changing the direction in accordance with Newton's law (Fermat's principle). Glass is similar to the virtual partition, but its transmission factor is not 100%, and thus there occurs reflections in accordance with Newton's law and diffused reflections to some extent. Further, with a colored glass, the transmission factor and reflection factor or the like for each primary color vary depending to the color. In addition, unlike the virtual mirror, the reflection factor is 95% with a mirror. Thus, there also occur diffused reflections to some extent. According to the above, not only the illuminance at a given height from the floor in a space where nothing exists or namely the amount of the light or the light entering into the human eyes can be found, but also a show window using a colored glass with a multi-color light source at a shop or a hall furnished with a plurality of mirrors can be simulated visually. Next, another modification will be explained. In case of the simulation in the sales engineering or by users unfamiliar with the simulator, the monitor sometimes walks out of the room because of the incorrect manipulation during the walk-through. In this case, in the sales engineering particularly, if only the outside wall is visible, it is difficult for the customer to find his current location in relation with the outside view field and the house produced in the goggle-type stereoscopic display unit 11, making it difficult to walk back to the room. Accordingly, in the present invention, when the user walks out of the room, the outside wall is turned into transparent as being deemed to be the virtual partition, so that the user can find his location within the room easily to facilitate the manipulation to return to the room. Here, not only displaying the outside wall transparent, but also displaying the scenery such as the garden formed separately enables the user to look over the inside of the room from the outside. This not only facilitates the correction of the incorrect operation, but also realizes a more definite evaluation of the internal room entirely. Of course, the external environments such as the garden may be inputted as the subject of the visual simulation to observe the external environments together with the inside of the room through the open window. Accordingly, the effects in the sales engineering increase. In this case, note that a necessary amendment for illuminance is performed to compensate the difficulty in watching caused by the brightness differences due to the open and closed windows or the brightness differences between the inside and outside of the room. More precisely, the eye sight is proportional to a logarithm of the illuminance, and lowering the outside illuminance depending on the necessity will be considered as well. FIG. 21 shows a case where the inside of a virtual house seen from the outside together with trees in the garden is displayed. Fifth Embodiment Next, another embodiment of the present invention will be explained. In general, the user is interested in confirming the atmosphere created by the internal illumination or how the room appears during the walk-through when evaluating the living environments. However, when the designers of the house or equipment use the simulator to collect intuitive planning data, it is necessary to display more detailed physical phenomenon visually. This is important, in particular, when planning the lighting environments at an art exhibition or the sound environments at a concert hall. In this embodiment, a virtual cross section is formed in the room to display a massive amount of 3-D data such as the temperature distribution by the numerical simulation thereon as scalar information such as an isothermal line to enable the designer to collect the intuitive planning data. In this case, 3-D data, vector information or the like are displayed in the form of contour lines of 2-D data, making it easy to impress the user. Also, being displayed stereoscopic, the internal environments become intuitive, making it easy to effectively reflect the display results on various designs. Next, the basis of the data processing will be explained. As has been stated, the temperature, wind direction and wind speed or the like at each point in the room have been calculated to be stored in the steps of the environment analysis and subsequent prior storage. For this reason, if a two-dimensional plane subject to isothermal line is fixed, of all the calculation results at each point, the closest one to the plane is taken out from the memory to link the points of the same temperature by compensation curves. Also, for example, with respect to the illuminance, the analysis value at each point of the room per output unit of the light source is stored to be easily corrected with a simple calculation depending on the output or the contents of each light source to be displayed, enabling a quick response. The illuminance at the height of 1.5m from the floor can be found using the virtual partition which was explained in the preceding embodiment. FIG. 22 shows contour lines of the illuminance on the virtual partition and wall inside of the room. Next, in this embodiment, it is possible to evaluate and observe the internal environments by moving or rotating the contour lines in various directions using the 3-D input unit 30. Due to the stereoscopic display, a multi-layer display is also possible of course. More precisely, a lengthwise partition placed 1m away from the user is displayed in red, the one 2m away in yellow, and the one 3m away in blue, and numerical values that each couture line indicate are displayed at a regular interval or at a certain position. Note that, in this embodiment, an unillustrated speech recognition unit may enable to move the contour line at the display position. This is done to minimize the movement of the body since the contour lines rotate while the user is covered his eyes with the goggle. Next, the local and detailed evaluation will be explained. As to the seats for honored guests in a hall, the user actually moves to these seats to collect detailed planning data; more precisely, it is necessary that a location subject to measurement is designated by assuming the 3-D input unit 30 as a virtual sensor to collect the detailed temperatures or the like at that designated location. Since there exist data for each coordinate for the temperature, speed, etc., they can be found either by extrapolation, or detailed calculation using the data at a close point. The angle between the location of the view point and eye ray is necessary for an intensity. Thus, the angle of the 3-D input unit 30 and goggle-type stereoscopic display unit 11 are read to calculate an intensity value at that location by computation further to display the numerical value at a designated location in the goggle-type stereoscopic display unit 11 as shown in FIGS. 23A and 23B: FIG. 23A displays the temperature and illuminance in numerical values, and FIG. 23B displays the speed and direction of the wind in values and vectors. In this embodiment, as shown in FIG. 3, an input unit 15 is additionally included in the goggle-type stereoscopic unit 11, so that the selection of the environment elements or time conditions can be changed by the input unit 15. This principle is shown in FIG. 24 and is as follows: magnetism detecting pointer or the like for each direction of 3-D (up-and-down, left-and-right, front-and-rear) is installed in the goggle-type stereoscopic display unit 11 to enable the selection and changing manipulation by the speed of the 3-D input unit to the magnetic field or gravity direction, acceleration and the directions of the aforementioned. In this case, being fixed to the head and eyes facilities the precise designation of the location. Sixth Embodiment This embodiment relates to the generation and display of a plurality of soft-robots. In general, there are plurality of people in the house, shops, offices, etc. For this reason, to experience a realistic simulation visually, it is preferable to consider the existence of other people. Each behaves independently in some cases and each affects with each other in other cases. In this embodiment, any case can be simulated while the mutual affects can be analyzed as well. Next, a case where three soft-robots 91, 92, 93 are shown in one of the goggle-type stereoscopic display units 11 are displayed and the principle thereof or the like will be explained based on FIG. 25. The soft-robots 91, 92, 93 in FIG. 25 correspond to their respective sets, each consisting of the corresponding goggle-type stereoscopic display unit 11, 3∼D input unit 30, computation unit 13, magnetic field generating unit 14, etc. The stereoscopic display unit 11 can not only display the soft-robot 91 walking through the room in accordance with the manipulation by the 3-D input unit 30 within the corresponding set, but also display the soft-robots 92, 93 walking through the same room manipulated by other sets. For this reason, the environment elements can be evaluated visually and objectively when the soft-robots 92, 93 manipulated by the other users walk through the room besides the soft-robot 91 manipulated by one user. It is needless to say that the soft-robots 92, 93 manipulated by the other users are displayed where the other users exist. For this reason, not only the simulation by taking into the account of other users can be experienced, but also the simulator can be used for the analysis for the behavior of people or the customers in a shop at a fire. Note that in the above cases, a program necessary to display the smoke or goods displayed at the show window is incorporated of course. In addition, various kinds of equipment necessary to make a plurality of people's behavior subject to analysis are included of course. FIG. 26 shows a structure for this purpose. In FIG. 26, numerals 261, 262, ··· are equipment provided for each user or monitor, and each of which comprises the goggle-type stereoscopic display unit, 3-D input unit, magnetic field generation unit, and which is substantially of the same structure as the one shown in FIG. 3 except for the computation control unit 13. Numeral 2613 is a computation control unit and compared with the one shown in FIG. 3, it is different in the following points : some components are provided in matching numbers to the users to enable the simultaneous use with a plurality of users, and a location parallax adjustment unit 2611 is additionally included. In other words, there are a plurality of the soft-robot display data computation units 136, soft-robot moving speed vector computation units 135, and 3-D space moving speed vector computation units 133 in a matching number to the users. An adjustment unit 260 to adjust inconsistent requests from each user is additionally included. On the other hand, the computation unit 134 that calculates the common internal environments or the like is common. The adjustment unit 260 adjusts the inconsistent requests from each user, so that a plurality of the soft-robots 91, 92, 93 will not be displayed at a single location, and also it sends information as the location of each user to a location-parallax adjustment unit 2611 in each set. The location-parallax adjustment unit 2611 adds amendments according to the location or the like of each user when the internal environments calculated by the 3-D space display data computation unit 134 is created in the goggle-type stereoscopic display unit 11 for each user. As well, it receives data to generate the soft-robots corresponding to other users from the adjustment unit 260 while sending information of its user. Next, another application and using method of this embodiment will be explained. In house sales, when the customer experience the housing environments of the subject house or the like, the customer is not familiar with the contents of the simulation and manipulations of the 3-D input unit 30, and the experience often ends unsatisfactory. Thus, the sales man of the constructing company or the sales company puts on the goggle-type stereoscopic display unit 11 to experience the same virtual housing environments that the customer is experiencing to help the manipulation and simulation. This may increase the effects in selling the houses besides the simulation. Accordingly, the use of simulators by making a pair of the customer and sales man is realized. In this case, two soft-robots 91, 92 respectively corresponding to the customer and sales man may be displayed, or a virtual space or the like created based on the customer's sight or intention may be displayed in the goggle-type stereoscopic display unit 11 that the sales man is putting on. In the latter case, sales man's location-parallax adjustment unit 2611, soft-robot display data computation unit 136 or the like will not be operated, and a video signal or the like for the customer's simulation is divided by two to be supplied to both the goggle-type stereoscopic display units 11. In any case, the manipulation or adjustment of the sales man's 3-D input unit 30 is switched upon the consent by verbal communication where necessary. The present invention has been explained based on the embodiments but it is not limited to these embodiments. For example, it can be modified as follows: (1) The 3-D space is not limited to the internal space, any 3-D space which can be subject to simulation such as inside of air craft, outside theater, jungle, the North or South Pole, outer space, or the Mediterranean Sea is applicable. "Internal" referred herein includes any point within the 3-D space, and "house" or "device" means a kind of the 3-D space, the content, or various condition generating elements existing inside thereof. To be more specific, a plain in the Mesozoic era where dinosaurs exist can be simulated just for fun. In this case, the user may watch the dinosaurs, or the view in the Mesozoic era seen through the eyes of the dinosaurs. Further, the goggle-type stereoscopic display unit may generate a world seen through the eyes of the reptiles or insects. (2) The physical data to be evaluated are not limited to the computer simulation result, and experimental measurement result may be reflected as well. In this case, the measurement result has been inputted in advance of course. The experiment measurement is, for example, smoke used to analyze people's behavior at a fire by the simulator of the six embodiment. (3) The 3-D input unit is to be manipulated by one hand but to be held by both hands, so that rough operation or command is inputted by left hand and detailed command is inputted by the right hand. Another input unit may be additionally used. Particularly in the sales engineering, the sales man sets a complex condition by another manipulation unit to simplify the 3-D input unit for the customer. Also, typical words such as "stop" may be input verbally while the customer walks through the room. (4) The 3-D input unit to be manipulated by hands and the one attached at the head were explained; however, they do not necessarily have the same function. In other words, main functions are given to the one at hand, and the one at the head may be used for changing the virtual internal space in accordance with the movement of the head or neck and for designating the direction of the walk-through. This would be more practical for the customer's simulation in the sales engineering. (5) A stereo headphone may be included so that noise caused by the operation of a washing machine, air conditioner, etc. can be simulated. (6) The 3-D unit may not be of the configuration of the trigger of the pistol; it may be of the configuration of the barrel such that includes a lengthy bar to obtain manual directivity of the 3-D beams. (7) A CRT and a CPU or the like may be additionally included, so that a third party can refer to the display on the CRT on a desk to analyze or change the virtual housing environments created for the monitor's sight, operation by the monitors, or the simulation contents. This would be effective in analyzing the people's behavior at emergency or the like. (8) The detection or the like for the change of the rotation angle of the 3-D input unit may depend on only the gravity. A supersonic wave or an ultra-red rays or the like may be used with a corresponding costs and complexity. This would further enable a precise input manipulation. (9) When a plurality of people put on the goggle-type stereoscopic display units, the same internal environments may be created in each of them. The video of the internal space corresponding to the eye ray position depending on the shaking of the head or direction may be constructed. Accordingly, one sales man can attend a plurality of customers, so that they can experience the simulation of the subject house visually. (10) In case that the environments such as the coffee houses or dance halls are simulated, a function to generate a plurality of soft-robots that do not correspond to any of the monitors may be additionally furnished. In this case, the amount of heat (60-100W/person) is assumed to increase proportional to the number of the soft-robots, and the thermal conditions are analyzed. The wind direction or the like may be neglected, analyzed, or discussed separately depending on the conditions. (11) When selecting the menu, the menu may be encircled by an additional specific color frame. (12) The manipulation guidance of the 3-D input unit may be displayed within the view field in the goggle-type stereoscopic unit for the customer or unfamiliar people. Although the present invention has been fully described by way of example with reference to the accompanying drawings, it is to be noted that various changes and modification may be made without departure from the scope of the present invention, as determined in the appended claims.

Claims: A simulator for producing a user-manipulable simulated visual environment (71), the simulator comprising: stereoscopic viewing means (11); environment data input and storage means (1101) for inputting and storing environment data for use by environment producing means to produce and display a simulated environment (71) in the viewing means (11) based on the environment data; and symbol producing and designation means (30,130,135,136,1107) for producing a symbol of changeable behaviour and enabling a user to position the symbol at various locations within the simulated environment; characterised by physical condition data input and storage means (1106) for inputting and storing physical condition data, said physical condition data relating to at least one simulated physical condition at various locations within the simulated environment (71) represented by the stored environment data; physical condition data calculation and storage means (1102) for calculating and storing a value representing at least one simulated physical condition at a location of the symbol within the simulated environment (71), using at least part of the stored physical condition data and environment data; symbol display rule input and storage means (1103) for inputting and storing a rule that determines how the symbol behaviour will change in response to said value; and symbol behaviour calculation and control means (1105) for determining symbol behaviour in accordance with the stored value and rule, and for controlling the viewing means accordingly to display the symbol in the simulated environment (71), the symbol behaving in accordance with the symbol behaviour thus determined so as to convey simulated physical condition information to the user in accordance with the location of the symbol within the simulated environment (71). The simulator of Claim 1, wherein the symbol indicates said value representing at least one simulated physical condition at a location of the symbol within the simulated environment (71), and wherein changes in symbol behaviour are changes in the indicated value. The simulator of Claim 1, wherein the symbol is a soft-robot (90) and changes in symbol behaviour are changes in the appearance of the soft-robot or a related display. The simulator of Claim 3, wherein: the physical condition data input and storage means (1106) includes means for inputting data that determines a simulated physical condition relating to air circulation within the simulated environment (71); the physical condition data calculation and storage means (1102) includes means for calculating and storing wind direction and wind speed distribution within the simulated environment (71); the symbol display rule input and storage means (1103) includes means for inputting a relation between wind direction and speed and direction and manner of sway of a string (1501), said string being part of said soft-robot (90) and being attached to at least one point on the remainder of said soft-robot; and the symbol behaviour calculation and control means (1105) includes means for determining behaviour of the string (1501) based on said relation, said string behaviour being a symbol behaviour that determines the appearance of the soft-robot (90). The simulator of Claim 3 or Claim 4, wherein: the physical condition data input and storage means (1106) includes means for inputting data that determines a simulated physical condition relating to illuminance within the simulated environment (71); the physical condition data calculation and storage means (1102) includes means for calculating and storing illuminance within the simulated environment (71); the symbol display rule input and storage means includes means (1103) for inputting at least one of an expression and shades on a face of said soft-robot (90) in accordance with illuminance on said face; and the symbol behaviour calculation and control means (1105) includes means for determining at least one of the expression and shades on said face in accordance with illuminance on said face, said expression and/or shades being a symbol behaviour that determines the appearance of the soft-robot (90). The simulator of any of Claims 3 to 5, wherein: the physical condition data input and storage means (1106) includes means for inputting data that determines a simulated physical condition relating to sound within the simulated environment (71); the physical condition data calculation and storage means (1102) includes means for calculating and storing sound strength from a predetermined sound source within the simulated environment (71); the symbol display rule input and storage means (1103) includes means for inputting sound display data to be attached on said soft-robot (90) in accordance with sound strength arriving at ears of the soft-robot; and the symbol behaviour calculation and control means (1105) includes means for varying a volume display in accordance with said sound strength, said volume display being a symbol behaviour that determines the appearance of a display related to the soft-robot (90). The simulator of any of Claims 3 to 6, wherein: the physical condition data input and storage means (1106) includes means for inputting data that determines a simulated physical condition relating to at least one of temperature and effective temperature within the simulated environment (71); the physical condition data calculation and storage means (1102) includes means for calculating and storing at least one of temperature and effective temperature within the simulated environment (71); the symbol display rule input and storage means (1103) includes means for inputting color display data to be attached on at least one predetermined point on said soft-robot (90) in accordance with at least one of temperature and effective temperature at said predetermined point; and the symbol behaviour calculation and control means (1105) includes means for attaching a color on said predetermined point in accordance with at least one of temperature and effective temperature at said predetermined point, said color display being a symbol behaviour that determines the appearance of a display related to the soft-robot (90). The simulator of any preceding claim, further comprising: means for enabling the user to change at least part of the stored physical condition data into at least one of other data and new input data; and means for amending the behaviour of the symbol in accordance with said change to the physical condition data. The simulator of Claim 8, wherein the symbol producing and designation means (30,130,135,136,1107) includes: a detecting unit for detecting at least one of a manipulation causing a magnetic change, a manipulation causing an acceleration, a button-pushing manipulation, and a switching manipulation by a hand movement of said user; and a detection manipulation converting unit for converting outputs from the detecting unit into designation and amendment commands to designate and amend the symbol's location. The simulator of Claim 9, wherein said symbol producing and designation means further includes: a speech input unit for accepting speech commands from said user, and a verbal command converting unit for converting said speech commands into the designation and amendment commands.

Inventors: HATTORI YOSHIHIRO, KODAMA HISASHI, NAGAMITSU SACHIO, OKADA TUNEKO, SAKAI MAYUMI, HATTORI, YOSHIHIRO, KODAMA, HISASHI, NAGAMITSU, SACHIO, OKADA, TUNEKO, SAKAI, MAYUMI
Applicants: MATSUSHITA ELECTRIC IND CO LTD, MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
Application year: 1994
Main classification: G06T15
IPC codes: G06F3